Finding the Fourth Proportional to 116.21, 160.38 and 67.10

Step by Step Solution

1. Step 1: Write the proportion equation
   116.21 : 160.38 = 67.10 : x
2. Step 2: Convert to fraction form
   116.21/160.38 = 67.10/x
3. Step 3: Cross multiply
   116.21x = 160.38 × 67.10
4. Step 4: Simplify right side
   116.21x = 10,761.50
5. Step 5: Solve for x
   x = 10,761.50/116.21
6. Step 6: Final answer
   x = 92.60